module.exports = {
  /**
   * 检查context的data中的指定参数是否为空
   * @param {*} context 
   * @param {*} paramNameArrString 必须传参属性名称
   */
  checkParamsNull(context,paramNameArrString){
    const data = context.data;
    const paramNameArr = paramNameArrString.split(",");

    for(let i=0;i<paramNameArr.length;i++){
      let paramName = paramNameArr[i];
      if(!data[paramName]){
        return {code:-22,msg:paramName+"是必须的",data:"缺失参数："+paramName}
      }
    }
    return false;
  },
  /**
   * 生成uuid
   */
  uuid(){
    var s = [];
    var hexDigits = "0123456789abcdef";
    for (var i = 0; i < 36; i++) {
      s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
    }
    s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010
    s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
    s[8] = s[13] = s[18] = s[23] = "-";

    var uuid = s.join("");
    return uuid;
},
}